I cannot really recommend anything from ATN that I know of, these units all have FLIR microbolometer hardware inside them but ATN is responsible for the software drivers for the thermal camera output and there have been some problems with that. I looked at these new units earlier this year close and hard when they first came out before I decided to get my FLIR thermals. I would much rather have something 100% FLIR inside and out, mil spec with warranty service for that price.....and a clip-on unit that is easy to remove or install as needed and has zero impact on POA-POI when installed in front of a scope.
In addition, thermal is a little more difficult to get used to, especially the FOV and identifying what it is you are looking at in a strange area (hunting somewhere you have never seen during the day), in those conditions it is difficult to figure out what you are seeing and even find the interface of the ground sometimes. That said, there is NO WAY I would want a 4X only dedicated thermal weapon scope, if you were to get one, I would get either the 1X or maximum 2X as any more magnification would be very disorientating with a thermal unit....